title: First detection of cyanobacterial PSP (paralytic shellfish poisoning) toxins in Spanish freshwaters.
abstract: Presence of the paralytic shellfish toxins (PSTs) saxitoxin, neosaxitoxin, decarbamoyl saxitoxin and gonyautoxin-5 was analyzed by mass spectrometry in 41 Spanish freshwaters and 13 strains of potential PST-producing planktonic cyanobacteria. Toxins were detected in five waterbodies, but were absent from the isolated strains. PST containing samples belonged to the same geographical region (South Western Spain) and were most likely related to the presence of the genus Aphanizomenon.
authors.affiliation: Dpto de Biología, Universidad Autónoma de Madrid, C. Darwin 2, 28049 Madrid, Spain.
authors.forename: Lars
authors.initials: L
authors.lastname: Wörmer
authors.forename: Samuel
authors.initials: S
authors.lastname: Cirés
authors.forename: Ramsy
authors.initials: R
authors.lastname: Agha
authors.forename: María
authors.initials: M
authors.lastname: Verdugo
authors.forename: Caridad
authors.initials: C
authors.lastname: de Hoyos
authors.forename: Antonio
authors.initials: A
authors.lastname: Quesada
mesh_terms: D000458:Cyanobacteria / Q000737:chemistry*; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D005618:Fresh Water / Q000737:chemistry*; D013058:Mass Spectrometry; D012530:Saxitoxin / Q000031:analogs & derivatives* / Q000032:analysis; D013030:Spain
chemical_list: C076433:decarbamoyloxysaxitoxin; D012530:Saxitoxin; C042155:gonyautoxin V; C034902:neosaxitoxin